Daryl,
These days there are actually more paper cases available (well "available" in theory) than just Federal. The "go green" idea is encouraging paper cases as they will eventually biodegrade. (no, do NOT ask about the brass case head)
Remington "Peters" new production
RST
Cheddite
Others?

Possibly some or all might be found in Canada. These days they are all but unobtanium here in the States.
- Mike